8112720 has 160 divisors (see below), whose sum is σ = 31426560. Its totient is φ = 1681920.

The previous prime is 8112707. The next prime is 8112737. The reversal of 8112720 is 272118.

8112720 is digitally balanced in base 4 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

8112720 is strictly pandigital in base 8.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18261 + ... + 18699.

It is an arithmetic number, because the mean of its divisors is an integer number (196416).

Almost surely, 2^8112720 is an apocalyptic number.

8112720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8112720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15713280).

8112720 is an abundant number, since it is smaller than the sum of its proper divisors (23313840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8112720 is a wasteful number, since it uses less digits than its factorization.

8112720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473 (or 467 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 8112720 is about 2848.2836937356. The cubic root of 8112720 is about 200.9349558108.

Adding to 8112720 its reverse (272118), we get a palindrome (8384838).

The spelling of 8112720 in words is "eight million, one hundred twelve thousand, seven hundred twenty".